RE: https://mastodon.online/@globalmuseum/115849161944999694

#Moths of the #Saturniidae are characterized by #adults that camouflage with closed wings (#mimesis), but perform a #mimicry behavior, when disturbed by presenting their #eyespots. They have stunted/fully reduced #mouthparts and reproduce only. Species of genus #Automeris live mostly in the tropics/subtropics, #caterpillars can look #colorful and #bizarre and are defensive via stinging hairs. Exples: Automeris egeus or A. niepelti. The #caterpillar below might be related.
© text S.F.Wirth,2026

@deepstatedude

I think this is very likely to be in the genus #Automeris, particularly if we allow for the possibility that the coloration was greener than your photo shows.

Mexico seems to have more than a couple of dozen species:

https://www.naturalista.mx/observations?place_id=6793&taxon_id=82286

Observaciones

Polillas ojo de venado de México

NaturaLista Mexico

The #Mothening continues! For this the 6th day of #NationalMothWeek, I present a double feature of two of my favorite moths for utter fabulosity, The Rosy Maple#Moth, #dryocampa rubicunda, and the #IO moth, #Automeris io. Both just stunningly gorgeous.

#mothstodon

@ryan
I'm pretty sure it's from the #Automeris family.
It could be Automeris metzli. See also: https://www.projectnoah.org/spottings/17276321
Costa Rican Hairy Caterpillar

Hairy caterpillar about 10cm long. Local people said it could hurt a child. Moved quite fast. In this site it is referenced as one of the top poisonous caterpillars in the world: http://www.environmentalgraffiti.com/nature/news-ten-creepy-and-colorful-caterpillar-hazardous-human-health

Project Noah